arXiv:2408.11603 [pdf, html, other] Gravitational lensing effect of black holes in effective quantum gravity Hao Liu, Meng-Yun Lai, Xiao-Yin Pan, Hyat Huang, De-Cheng Zou Subjects: General Relativity and Quantum Cosmology (gr-qc)
In the present work, we investigate the gravitational lensing effects of two quantum-modified black hole models recently proposed in effective quantum gravity. The light deflection angles in both the weak field limit and the strong field limit are calculated. Furthermore, we use the data of the supermassive black holes SgrA* and M87* and calculate the lensing observables in the strong field limit. We find that the quantum parameter plays a role analogous to the electric charge in the weak gravitational lensing, whereas in the strong field limit, the effect of the quantum parameter on the deflection angle, the angular separation and the relative magnification is opposite to that of the electric charge, the scalar charge and the quantum parameters in some gravity theories. The results indicate the discrepancies between the classical black holes and the two quantum-modified black hole models that depend on the quantum correction, making them a valuable tool for differentiating between these black hole models.
arXiv:2408.11603 [pdf, html, other]
ReplyDeleteGravitational lensing effect of black holes in effective quantum gravity
Hao Liu, Meng-Yun Lai, Xiao-Yin Pan, Hyat Huang, De-Cheng Zou
Subjects: General Relativity and Quantum Cosmology (gr-qc)
In the present work, we investigate the gravitational lensing effects of two quantum-modified black hole models recently proposed in effective quantum gravity. The light deflection angles in both the weak field limit and the strong field limit are calculated. Furthermore, we use the data of the supermassive black holes SgrA* and M87* and calculate the lensing observables in the strong field limit. We find that the quantum parameter plays a role analogous to the electric charge in the weak gravitational lensing, whereas in the strong field limit, the effect of the quantum parameter on the deflection angle, the angular separation and the relative magnification is opposite to that of the electric charge, the scalar charge and the quantum parameters in some gravity theories. The results indicate the discrepancies between the classical black holes and the two quantum-modified black hole models that depend on the quantum correction, making them a valuable tool for differentiating between these black hole models.
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